ProSoft Technology MVI69-DNPSNET - Manual (Page 97)

Reference MVI69-DNPSNET ♦ CompactLogix or MicroLogix Platform
Distributed Network Protocol Interface Module
ProSoft Technology, Inc. Page 97 of 119
November 3, 2008
Word Variable Name Description
13 DNP Slave Port total number of message
frames received by slave This value represents the total number of
message frames that have matched this
slaves address on this port. This count
includes message frames which the slave
may or may not be able to parse and
respond.
14 DNP Slave Port total number of response
message frames sent from slave This value represents the number of good
(non-error) responses that the slave has
sent to the master on this port. The
presumption is that if the slave is
responding, the message was good.
Note: This is a frame count.
15 DNP Slave Port total number of message
frames seen by slave This value represents the total number of
message frames received by the slave,
regardless of the slave address.
16 DNP Slave synchronization error count
(Physical Layer Error) This value counts the number of times a
sync error occurs. The error occurs when
extra bytes are received before the start
bytes (0x05 and 0x64) are received.
17 DNP Slave overrun error count (Physical
Layer Error) This value counts the number of times the
overrun error occurs. This error occurs
when the mainline Data Link Layer
routine cannot read the data received on
the communication port before it is
overwritten.
18 DNP Slave length error count (Physical
Layer Error) This value counts the number of times an
invalid length byte is received. If the
length of the message does not match the
length value in the message, this error
occurs.
19 DNP Slave bad CRC error (Data Link Layer
Error) This value counts the number of times a
bad CRC value is received in a message.
20 DNP Slave user data overflow error
(Transport Layer Error) This value counts the number of times the
application layer receives a message
fragment buffer which is too small.
21 DNP Slave sequence error (Transport
Layer Error) This value counts the number of times the
sequence numbers of multi-frame request
fragments do not increment correctly.
22 DNP Slave address error (Transport Layer
Error) This value counts the number of times the
source addresses contained in a multi-
frame request fragments do not match.
23 DNP Slave Binary Input Event count This value contains the total number of
binary input events which have occurred.
24 DNP Slave Binary Input Event count in
buffer This value represents the number of
binary input events which are waiting to
be sent to the master.
25 DNP Slave Analog Input Event count This value contains the total number of
analog input events which have occurred.
26 DNP Slave Analog Input Event count in
buffer This value represents the number of
analog input events which are waiting to
be sent to the master.